Well after my initial problems with an unstable wifi and brown screen, both of which have been sorted (swapped the iPad for a new one fixed the screen issue, and getting a new n-router has solved the wifi issue), I have to say that the iPad 3 is awesome. If screen and picture quality is important there's really no comparison, no other tablet comes close IMO, including earlier versions of the iPad.
Having said this I can't wait for the iPad 4 IF they take some of the weight saving technology and screen technology from the iphone 5, impressive yo say the least. Also, I thought the iPad 3 was fast but the iphone 5 is a whole new level of fast.